What is the relationship between axial resolution and pulse length?

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Sharpen your skills for the Davies Publishing SPI Test with targeted flashcards and multiple-choice questions, complete with hints and clarifications. Prepare thoroughly for success!

Multiple Choice

What is the relationship between axial resolution and pulse length?

Explanation:
Axial resolution is set by the length of the ultrasound pulse in tissue, known as the spatial pulse length. The axial resolution distance is roughly SPL divided by two, so it scales with SPL. When the pulse length gets longer, the axial resolution distance gets larger (worse); when the pulse length gets shorter, the axial resolution distance gets smaller (better). In other words, axial resolution and pulse length move together in a directly proportional way. To improve axial resolution, you shorten the pulse length.

Axial resolution is set by the length of the ultrasound pulse in tissue, known as the spatial pulse length. The axial resolution distance is roughly SPL divided by two, so it scales with SPL. When the pulse length gets longer, the axial resolution distance gets larger (worse); when the pulse length gets shorter, the axial resolution distance gets smaller (better). In other words, axial resolution and pulse length move together in a directly proportional way. To improve axial resolution, you shorten the pulse length.

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